situated beneath the cortex.
noun, plural subcostae [suhb-kos-tee, -kaw-stee] /sʌbˈkɒs ti, -ˈkɔ sti/ (Show IPA) 1. a longitudinal vein in the anterior portion of the wing of an insect.
- Subcostal artery
subcostal artery sub·cos·tal artery (sŭb-kŏs’təl) n. An artery with its origin in the thoracic aorta, with distribution from the inferior to the twelfth rib.
- Subcostal muscle
subcostal muscle n. Any of a number of inconstant muscles having the same direction as the internal intercostal muscles but passing deep to one or more ribs.
- Subcostal nerve
subcostal nerve n. The ventral branch of the 12th thoracic nerve, supplying parts of the abdominal muscles and giving off cutaneous branches to the skin of the lower abdominal wall and to the gluteal region.